Question

inveise as a whöle continues to expand. d) The hot and cold spots have a characteristic angular extent of 1° roughly the size of the cosmic horizon at that time (t 300, 000 yrs). We and our Galaxy were formed in one of the hot (and therefore denser) spots, while the cold spots are less dense and form today into what's called the cosmic void. How large is one such void (expres diameter in mega parsec)? To perform this estimate, assume that the hot/cold spots expand with the universal expansion. FYI, the Bootes void has a diameter of ~ 100Mpc. It contains only 60 galaxies, a few thousand times fewer than other regions in the universe. e) Everything in the universe is immersed in the CMB photon bath. For an object that has no internal energy source, the CMB photons will heat it up to a certain temperature. Can you find out what this temperature is by equating the CMB flux received with the blackbody flux radiated by the object? If gas in the universe has to be cooled to below 100 Kelvin for stars to start forming, what is the highest redshift we expect to observe star formation? : This is claimed to be NG

Answer 1

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uivelue -4 gfta Afuhul知dinu à dreud ade-/d.toen rok. - lwaw